Removed extraneous tandem calls in EyeDropperNode, see https://github.com/phetsims/phet-io/issues/1148
Removed extraneous tandem calls in EyeDropperNode, see https://github.com/phetsims/phet-io/issues/1148

phetsims/scenery-phet,phetsims/scenery-phet,phetsims/scenery-phet